| 摘要 |
PROBLEM TO BE SOLVED: To provide an article retrieval system that can be very reliable to a user. SOLUTION: In this article retrieval system, a retrieval mode inputted by the user is analyzed (S5), and in the case of a purchase history mode for performing retrieval from purchase history (yes in S6), user's purchase history is retrieved (S7). Information of merchandise that has been purchased so far is further specified according to the user's purchase history (S8). The latest merchandise information provided by a merchandise provider at the present moment is retrieved about merchandise with the same specification as that of the specified merchandise (S9). The user's purchase history is compared with merchandise information about the merchandise with the same specification as that of the merchandise (S10), and information updated after a purchase date is analyzed to prepare a display image showing the update. |
